2143506225017 has 4 divisors (see below), whose sum is σ = 2151244514916. Its totient is φ = 2135767935120.

The previous prime is 2143506224969. The next prime is 2143506225019. The reversal of 2143506225017 is 7105226053412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 125143307536 + 2018362917481 = 353756^2 + 1420691^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143506225017 - 2¹⁴ = 2143506208633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143506225019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3869144534 + ... + 3869145087.

It is an arithmetic number, because the mean of its divisors is an integer number (537811128729).

Almost surely, 2^{2143506225017} is an apocalyptic number.

It is an amenable number.

2143506225017 is a deficient number, since it is larger than the sum of its proper divisors (7738289899).

2143506225017 is an equidigital number, since it uses as much as digits as its factorization.

2143506225017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7738289898.

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 2143506225017 in words is "two trillion, one hundred forty-three billion, five hundred six million, two hundred twenty-five thousand, seventeen".